No option to adjust font size in Advanced Settings

### Your use case

Issue Description:
The software currently does not provide any way to change the font size. This makes it difficult for users who need larger text for readability or prefer smaller text for a more compact view.

Suggestion / Feature Request:
Please add a "Font Size" option under Advanced Settings, allowing users to increase or decrease the font size as needed.

Expected behavior:
A slider or a dropdown (e.g., Small / Medium / Large) in Advanced Settings that changes the font size throughout the application.

### Have you considered any alternatives?

no

### Additional context

This feature would greatly improve accessibility and user experience.

### Are you willing to provide a PR?

Yes